Question

Why does heating increase the speed at which a solute dissolves in water?

A. It raises the pressure of the water molecules.
O
B. It prevents the solute from crystallizing.
O
C. It makes the water molecules move faster.
O
D. It decreases the surface area of the solute.

Answer 1

Answer:

C. It makes the water molecules move faster.

Explanation:

Heating increases the speed at which a solute dissolves because the increase in temperature causes the water molecules to move faster. This causes the water molecules to collide with the solute more often and with more force.

Answer 2

C

Step-by-step explanation:

If the molecules are moving faster, they have more chances of coming into contact with other ions or molecules. They faster they do this, the faster they can dissolve.